<!DOCTYPE html>
<html> 
  <head>
    <title>TEST</title>
  </head> 
  <body>
    <h1>Test Page: Duplicates</h1>
    
    <ul>
        <li><span class="a">test</span> <span class="b">1</span></li>
        <li><span class="a">test</span> <span class="b">2</span></li>
        <li><span class="a">test</span> <span class="b">1</span></li>
    </ul>
    
  </body>
</html>